Comment 46 for bug 418499

I guess the problem is with the HSO module. It doesn't unload itself fully - device /dev/ttyHS1 remains in the system (although other /dev/ttyHS* are removed). Maybe that's why everything locks up. There is a new HSO version 1.12 but it doesn't compile on 2.6.31 because of changed structures.

BTW only Network Manager locks up the system. Using HSO Connect to connect to the Internet doesn't cause such failure - it becomes impossible to connect to the Internet but at least it doesn't lock up the system.